As I recall, the speed limit on the 400 series highways in Ontario was 70 mph, or roughly 110 kph, in the early 70s. The oil price shock circa 1973 caused the imposition of reduced speed limits in Canada and the US to reduce gasoline consumption. Thus the 400 highways were designed for a traffic flow of over 110 kph, so the speed limit could be raised.
Whether we would do it is another matter. There is a helluva difference in mileage or whatever we call it these days between 100 kph and 110 kph, believe it or not.
Whether we would do it is another matter. There is a helluva difference in mileage or whatever we call it these days between 100 kph and 110 kph, believe it or not.